CN207134423U - Lithium ion battery pole piece - Google Patents
Lithium ion battery pole piece Download PDFInfo
- Publication number
- CN207134423U CN207134423U CN201720355703.5U CN201720355703U CN207134423U CN 207134423 U CN207134423 U CN 207134423U CN 201720355703 U CN201720355703 U CN 201720355703U CN 207134423 U CN207134423 U CN 207134423U
- Authority
- CN
- China
- Prior art keywords
- pole piece
- hole
- battery
- glue
- glue film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model relates to the technical field of batteries, especially, relate to a lithium ion battery pole piece, which comprises a pole piece, the front and the reverse side of pole piece scribble the glue film respectively, the glue film weak point of reverse side is in positive glue film, 2-3 cm's not rubber coating region is respectively left at the both ends of pole piece, and it has the through-hole of a plurality of 0.1mm-0.3mm to open on the regional pole piece of wherein not rubber coating of one side. The plurality of coating areas are arranged at intervals, the non-gluing area is arranged between the adjacent coating areas, the through hole is arranged in the non-gluing area, the friction force of the area is increased due to the through hole, the hollow foil area forms a buffer space, the stress generated by volume expansion of a pole piece material is effectively buffered under the condition that the battery has higher energy density, the pole piece is prevented from being broken or the active material is prevented from falling off, and the reliability of the battery is improved.
Description
Technical field
It the utility model is related to cell art, more particularly to a kind of electrodes of lithium-ion batteries.
Background technology
With the growing tension of petroleum resources, the use of new-energy automobile particularly electric automobile is more and more extensive, with regard to mesh
For preceding pure electric automobile, be used as its main power source using lithium battery turns into a kind of main trend, now to electricity
The requirement of motor-car course continuation mileage is continuously increased, and due to the limitation of battery technology, presently mainly by the section of increase battery
Count to realize the increase of electric car course continuation mileage.If as a electric car that can be approved by market, without 200 kilometers
Course continuation mileage, it is difficult to meet to require to be, but to realize this data, with the technology of current lithium battery, it is necessary to section up to a hundred
Since battery is contacted.
Because lithium-ion electric pool size is smaller, lug spacing is small, it is necessary to special manufacture craft, therefore lithium ion battery
It is automatic to make more difficulty.The front portion of pole piece is not gluing when winding by hand at present, is so held when coiling is started
Easy coil stripping is, it is necessary to which winding long one section can take up.
Utility model content
The purpose of this utility model is to overcome the shortcomings of above-mentioned technology, and provides a kind of electrodes of lithium-ion batteries so that
Battery pole piece can be smoothly around family dependant.
The utility model to achieve the above object, using following technical scheme：
A kind of electrodes of lithium-ion batteries, it is characterised in that：Including pole piece, the obverse and reverse of the pole piece is coated respectively with glue
Layer, the glue-line of the reverse side are shorter than positive glue-line, and 2-3cm non-glue bearing areas is respectively left at the both ends of the pole piece, wherein one
Several 0.1mm-0.3mm through hole is provided with the pole piece of the non-glue bearing areas of side.
Preferably, the thickness of the glue-line is 0.1-0.5mm.
The beneficial effects of the utility model are:Relative to prior art, by being arranged at intervals some coating areas, and adjacent
Non- glue bearing areas is set between coating area, non-glue bearing areas sets through hole, due to through hole so adding rubbing for the region
Power is wiped, Shi Gaikongbo areas form cushion space, and pole piece material is effectively buffered in the case where ensureing that battery has higher energy density
Expect stress caused by volumetric expansion, so as to prevent that pole piece is broken or active material comes off, improve battery reliability.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is side view of the present utility model.
Embodiment
Below in conjunction with the accompanying drawings and preferred embodiment describes specific embodiment of the present utility model in detail.Such as Fig. 1 and Fig. 2 institutes
Show, a kind of electrodes of lithium-ion batteries, including pole piece 1, the obverse and reverse of the pole piece are coated respectively with glue-line 2, the reverse side
Glue-line is shorter than positive glue-line, and the non-coating area of 2-3cm non-glue bearing areas 3, wherein side is respectively left at the both ends of the pole piece
Several 0.1mm-0.3mm through hole 4 is provided with the pole piece in domain.The thickness of the glue-line is 0.1-0.5mm.Can be with by through hole
Increase frictional force during coiling, so as to prevent pole piece coil stripping.
By being arranged at intervals some coating areas, and non-glue bearing areas is set between adjacent coat area, non-glue bearing areas is set
Through hole is put, because, so adding the frictional force in the region, Shi Gaikongbo areas form cushion space with through hole, is ensureing battery
Stress effectively caused by buffering pole piece material volumetric expansion in the case of with higher energy density, so as to prevent pole piece to be broken
Or active material comes off, battery reliability is improved.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (2)
- A kind of 1. electrodes of lithium-ion batteries, it is characterised in that：Including pole piece, the obverse and reverse of the pole piece is coated respectively with glue Layer, the glue-line of the reverse side are shorter than positive glue-line, and 2-3cm non-glue bearing areas is respectively left at the both ends of the pole piece, wherein one Several 0.1mm-0.3mm through hole is provided with the pole piece of the non-glue bearing areas of side.
- 2. electrodes of lithium-ion batteries according to claim 1, it is characterised in that：The thickness of the glue-line is 0.1-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720355703.5U CN207134423U (en) | 2017-04-06 | 2017-04-06 | Lithium ion battery pole piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720355703.5U CN207134423U (en) | 2017-04-06 | 2017-04-06 | Lithium ion battery pole piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207134423U true CN207134423U (en) | 2018-03-23 |
Family
ID=61630653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720355703.5U Active CN207134423U (en) | 2017-04-06 | 2017-04-06 | Lithium ion battery pole piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207134423U (en) |
-
2017
- 2017-04-06 CN CN201720355703.5U patent/CN207134423U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |